So, technically, that is a feature that has been removed from our elements. There is a current work around that allows you to still add a data list element, though. If you click on "Sections", "Add New Section", and choose the section type "Schedule", those have data lists you can edit.

Thank you Elyzabeth, however, once again I've answered my own question. The data list I am looking for it is actually the page "schedule." After creating the page, I can copy and paste the form to other pages. Unfortunately, I cannot remove, nor replace the little calendar icon, so, I covered it with my own image.